Speakers: Dr. Amir Khodabandeh, Lecturer, Department of Infrastructure Engineering, the University of Melbourne, Australia
Seminar Title:Radio interferometric positioning: principles, challenges and outlook
Abstract: The interferometric carrier phase signals have served as key observations in various high-precision measurement systems and remote-sensing applications such as Global Navigation Satellite Systems (GNSS), Very Long Baseline Interferometry, Interferometric Synthetic Aperture Radar, Radio Interferometric Positioning Systems, and Opportunistic Navigation with non-conventional sensors. It is, for instance, the provision of GNSS carrier phase data that leads to centimeter-level positioning parameter solutions. The starring role of carrier phase data is particularly pronounced in case the integerness of the phase ambiguous cycles, the phase ambiguities, can be fully exploited in the estimation process. In this talk, we provide an overview of the principles of such interferometric estimation and outline its current and future underlying challenges. Particular attention is given to the recent development of new mega-constellation Low-Earth-Orbiting (LEO) communication satellites which, together with the proliferation of mass-market sensors, demands new interferometric estimation methods.
Host: Professor Michael Bevis
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